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r8169: fix WoL on shutdown if CONFIG_DEBUG_SHIRQ is set

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[ Upstream commit cc9f07a838c4988ed244d0907cb71d54b85482a5 ]

So far phy_disconnect() is called before free_irq(). If CONFIG_DEBUG_SHIRQ
is set and interrupt is shared, then free_irq() creates an "artificial"
interrupt by calling the interrupt handler. The "link change" flag is set
in the interrupt status register, causing phylib to eventually call
phy_suspend(). Because the net_device is detached from the PHY already,
the PHY driver can't recognize that WoL is configured and powers down the
PHY.

Fixes: f1e911d5d0 ("r8169: add basic phylib support")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/fe732c2c-a473-9088-3974-df83cfbd6efd@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Heiner Kallweit 2021-02-01 21:50:56 +01:00 committed by Greg Kroah-Hartman
parent 397ae1a245
commit 714c19bc13
1 changed files with 2 additions and 2 deletions
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4
drivers/net/ethernet/realtek/r8169_main.c
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@ -4753,10 +4753,10 @@ static int rtl8169_close(struct net_device *dev)
cancel_work_sync(&tp->wk.work);
phy_disconnect(tp->phydev);
free_irq(pci_irq_vector(pdev, 0), tp);
phy_disconnect(tp->phydev);
dma_free_coherent(&pdev->dev, R8169_RX_RING_BYTES, tp->RxDescArray,
tp->RxPhyAddr);
dma_free_coherent(&pdev->dev, R8169_TX_RING_BYTES, tp->TxDescArray,